After they decided on the filming location of BBC Elstree Centre in Hertfordshire, Smith and Holland set about creating the 23 characters needed, in just 14 days. They took a holiday in Playa de los Pocillos, Lanzarote, and started to create the characters. Holland created the Beale and Fowler family, drawing on his own background. His mother, Ethel Holland, was one of four sisters raised in Walthamstow. Her eldest sister, Lou, had married a man named Albert Beale and had two children, named Peter and Pauline. These family members were the basis for Lou Beale, Pete Beale and Pauline Fowler. Holland also created Pauline's unemployed husband Arthur Fowler, their children Mark Fowler and Michelle Fowler, Pete's wife Kathy Beale and their son Ian Beale. Smith used her personal memories of East End residents she met when researching Victorian squares. Ethel Skinner was based on an old woman she met in a pub, with ill-fitting false teeth, and a "face to rival a neon sign", holding a Yorkshire Terrier in one hand and a pint of Guinness in the other. Other characters created included Jewish doctor Harold Legg, the Anglo-Cypriot Osman family, Ali Osman, Sue Osman and baby Hassan Osman, black father and son, Tony Carpenter and Kelvin Carpenter, single mother Mary Smith and Bangladeshi couple Saeed Jeffery and Naima Jeffery. Jack, Pearl and Tracey Watts were created to bring "flash, trash, and melodrama" to the Square (they were later renamed Den, Angie and Sharon Watts). The characters of Andy O'Brien and Debbie Wilkins were created to show a modern couple with outwardly mobile pretensions, and Lofty Holloway to show an outsider; someone who did not fit in with other residents. It was decided that he would be a former soldier, as Holland's personal experiences of ex-soldiers were that they had trouble fitting into society after being in the army. When they compared the characters they had created, Smith and Holland realised they had created a cross-section of East End residents. The Beale and Fowler family represented the old families of the East End, who had always been there. The Osmans, Jefferys and Carpenters represented the more modern diverse ethnic community of the East End. Debbie, Andy and Mary represented more modern-day individuals.